For the first time, astronomers have watched gas boil and bubble on the surface of a distant star. Scientists observed the red giant star R Doradus with the Atacama Large Millimeter/submillimeter Array, or ALMA, in Chile over the course of four weeks in July and August 2023. The series of images shows large cells of … Read more
At age 12, Tracy Slatyer felt sorry for a book. She read a newspaper article about how lots of people were buying A Brief History of Time by Stephen Hawking. “But then … nobody was actually reading it,” she says. “People were just leaving it on their coffee tables.” Determined to rectify this wrong, Slatyer … Read more
As the youthful universe congealed under the pull of gravity, matter knotted itself into galaxies, galaxy clusters and filaments, weaving a dazzlingly intricate cosmic web. This web’s structure is thanks, in part, to the handiwork of neutrinos — lightweight, subatomic particles that surge through the cosmos in unimaginable numbers. Because they streak about at high … Read more
Betelgeuse, Betelgeuse! The red supergiant that marks Orion’s left shoulder may have a tiny, unseen companion. Two independent studies found evidence of a star about the same mass as the sun, orbiting Betelgeuse about once every 2,100 days. “It was very surprising,” says astrophysicist Morgan MacLeod of the Harvard & Smithsonian Center for Astrophysics in … Read more
While SpaceX’s Starlink satellites are enabling internet access and cell phone communications around the globe, they’re also posing a threat to radio astronomy, a new study suggests. In some wavelength bands, unintended leakage of electromagnetic radiation from the latest generation of the satellites is more than 30 times brighter than emissions from previous versions, Cees … Read more
To leave a lasting trail, meteors must aim downward. A new survey of shooting stars shows that meteors blazing 90 kilometers up in the sky leave a continuous glow, unlike those burning at higher altitudes. Meteors are normally bright events and you will miss them. A particle of space dust leaves a fiery trail of … Read more
As more and more species come close to extinction, scientists have been collecting samples of animals, plants and other creatures and storing them in biorepositories around the globe.SN: 5/8/19). But climate change, environmental disasters and wars threaten these modern Noah’s Arks (SN: 28/2/22). Now, a team of researchers is thinking of an out-of-this-world solution: building … Read more
Imagine going on a week-long business trip and not coming home until next year. That may be the case for American astronauts Sunita Williams and Butch Wilmore, whose eight-day mission to the International Space Station has already stretched to more than two months and is likely to last even longer. The pair launched to the … Read more
One of the most distant quasars known appears to have shut down the formation of new stars in all galaxies in its vicinity. A quasar is a powerful source of light created by hot gas swirling around a supermassive black hole at the center of a galaxy. Intense radiation from a quasar, called VIK J2348-3054, … Read more
A distant stellar nursery holds a cluster of newborn worlds the size of Jupiter, the smallest of which is surrounded by a disk of dust that may one day form moons. The detailed discovery, made thanks to the unprecedented sensitivity of the James Webb Space Telescope, could provide new insights into the formation of stars … Read more